TLC279IN Equivalent & Substitute Parts

Part Overview

The TLC279IN is a CMOS 4-circuit operational amplifier in 14-DIP through-hole packaging manufactured by Texas Instruments. This device functions as a general-purpose linear amplifier suitable for analog signal processing applications requiring low input bias current and moderate bandwidth performance. The TLC279IN is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for new production runs and legacy system maintenance.

Substiute Parts

TLC279IN

Texas InstrumentsIn Stock: 934TLC279IN Datasheet

Current PartRFQ

TLC279IDR

Texas InstrumentsIn Stock: 3618TLC279IDR Datasheet

MFR RecommendedRFQ

NJM13403D1

Nisshinbo Micro Devices Inc.In Stock: 873NJM13403D1 Datasheet

MFR RecommendedRFQ

NJU7024D#

Nisshinbo Micro Devices Inc.In Stock: 715NJU7024D# Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC279IN is determined by the following critical parameters: amplifier type (CMOS), number of circuits (4), slew rate (3.6 V/µs), gain bandwidth product (2.2 MHz), input bias current (0.6 pA), input offset voltage (320 µV), supply current (2.7 mA across 4 channels), output current per channel (30 mA), supply voltage range (4 V to 16 V), and operating temperature range (-40°C to 85°C).

TLC279IDR qualifies as a direct functional equivalent manufactured by Texas Instruments. This part maintains identical electrical specifications to the TLC279IN across all critical parameters. The primary distinction is packaging format: TLC279IDR uses 14-SOIC surface-mount packaging with tape and reel distribution, whereas TLC279IN uses 14-DIP through-hole packaging in tube format. Both share the same base product number (TLC279) and RoHS3 compliance status. TLC279IDR is designated Active product status with higher inventory availability (3600 units).

NJU7024D# manufactured by Nisshinbo Micro Devices Inc. is a CMOS 4-circuit amplifier in 14-DIP through-hole packaging, maintaining identical package compatibility with TLC279IN. However, this substitute exhibits degraded electrical performance across multiple parameters: slew rate of 0.4 V/µs (versus 3.6 V/µs), gain bandwidth product of 400 kHz (versus 2.2 MHz), and reduced supply current efficiency at 150 µA. Operating temperature range is narrower (-20°C to 75°C versus -40°C to 85°C). This part is suitable only for applications with relaxed bandwidth and slew rate requirements.

NJM13403D1 manufactured by Nisshinbo Micro Devices Inc. is a general-purpose 4-circuit amplifier in 14-DIP through-hole packaging. This substitute differs fundamentally in amplifier type classification (general purpose versus CMOS) and exhibits significantly different electrical characteristics: slew rate of 1.2 V/µs, gain bandwidth product of 2 MHz, input bias current of 25 nA (versus 0.6 pA), input offset voltage of 500 µV, and supply current of 3 mA. Supply voltage range is narrower (2 V to 14 V). This part is applicable only to designs where CMOS-specific performance characteristics are not required.

Parameter Comparison

Engineering Selection Recommendations

TLC279IDR is the primary recommended substitute when design constraints permit surface-mount assembly. This part maintains complete electrical equivalence to TLC279IN with identical CMOS performance characteristics, slew rate, bandwidth, and supply specifications. The transition from through-hole to surface-mount packaging requires PCB redesign but offers superior manufacturing efficiency and higher component density. TLC279IDR carries Active product status with established long-term availability and ROHS3 compliance certification. This substitute is appropriate for new product development and redesigned legacy systems.

NJU7024D# or NJM13403D1 substitution is permissible only when application requirements accommodate reduced performance specifications. NJU7024D# maintains CMOS amplifier classification and 14-DIP package compatibility but operates at significantly lower bandwidth (400 kHz versus 2.2 MHz) and slew rate (0.4 V/µs versus 3.6 V/µs). This part is suitable for low-frequency signal conditioning and power-constrained applications. NJM13403D1 operates as a general-purpose amplifier with different input bias characteristics and is applicable to designs where CMOS-specific performance is not a functional requirement. Both alternatives carry Active product status and RoHS compliance.

For applications requiring strict electrical equivalence with through-hole packaging, no direct substitute exists. In such cases, TLC279IDR with PCB redesign for surface-mount assembly is the recommended path forward.

Frequently Asked Questions (FAQ)

Q: Can TLC279IDR directly replace TLC279IN without circuit modification?

A: TLC279IDR provides complete electrical equivalence to TLC279IN. However, package format differs: TLC279IDR uses 14-SOIC surface-mount packaging while TLC279IN uses 14-DIP through-hole packaging. PCB layout redesign is required to accommodate the different pin pitch and mounting method. No circuit schematic changes are necessary.

Q: What are the key performance differences between TLC279IN and NJU7024D#?

A: Both devices are CMOS 4-circuit amplifiers in 14-DIP packaging. TLC279IN provides slew rate of 3.6 V/µs and 2.2 MHz bandwidth, while NJU7024D# operates at 0.4 V/µs slew rate and 400 kHz bandwidth. TLC279IN also supports wider operating temperature range (-40°C to 85°C versus -20°C to 75°C). NJU7024D# is suitable only for low-frequency applications where reduced bandwidth is acceptable.

Q: Is NJM13403D1 a suitable replacement for TLC279IN?

A: NJM13403D1 is a general-purpose amplifier, not a CMOS amplifier. While it maintains 4-circuit configuration and 14-DIP packaging, electrical specifications differ significantly: input bias current of 25 nA (versus 0.6 pA), slew rate of 1.2 V/µs (versus 3.6 V/µs), and gain bandwidth product of 2 MHz (versus 2.2 MHz). This substitute is applicable only to designs where CMOS performance characteristics are not required.

Q: What is the inventory status of substitute parts?

A: TLC279IDR (Active status) has 3600 units available. NJU7024D# (Active status) has 652 units available. NJM13403D1 (Active status) has 827 units available. TLC279IN (Last Time Buy status) has 897 units remaining. All parts carry RoHS compliance certification.

Q: Can I use NJU7024D# in a high-speed signal processing application?

A: No. NJU7024D# operates at 400 kHz bandwidth and 0.4 V/µs slew rate, which is insufficient for high-speed applications. TLC279IN and TLC279IDR both provide 2.2 MHz bandwidth and 3.6 V/µs slew rate, suitable for higher-frequency signal processing. Application bandwidth requirements must be verified before selecting NJU7024D#.

Q: Are all substitute parts RoHS compliant?

A: Yes. TLC279IN, TLC279IDR, NJU7024D#, and NJM13403D1 all carry RoHS compliance certification. TLC279IN and TLC279IDR are ROHS3 compliant. NJU7024D# and NJM13403D1 are RoHS compliant. All parts are REACH unaffected and classified under ECCN EAR99.